Before Coming to Trial, Sam Was Assigned a Public Defender

Before coming to trial, Sam was assigned a public defender, was informed of the charges, and was given a chance to review the evidence against him. At the trial, the prosecutor called the crime scene investigator to the stand, and she provided scientific evidence to show that Sam had indeed been inside the victim's home. In order to be allowed at trial, the evidence that the crime scene investigator presented would have had to meet:

A) the "Rawls test."
B) the "veil of ignorance test."
C) the "impartiality standard."
D) the "Daubert standard."